wow, I lost myself for a couple hours! what a fun and simple game :) I completed it on day 74. I agree with explosivelego's comment- this is a very relaxing game.
Some ideas for epic war 5 (if there is any): I speed up button, new special characters (ex., Yoda, Link from legend of Zelda, Mario, etc.), auto after every level and upgrade, and maybe story about the renaissance, you know, maybe move up when then story takes place, maybe add a sci fi story.